How can an eSIM help me when visiting a traditional Hungarian thermal bath?

While you won't be taking your phone into the pools, an eSIM is very useful for the overall experience. You can use it to book your ticket online in advance to skip the queues, download a podcast or music to listen to while relaxing in the lounge areas, and immediately share photos of the beautiful architecture, like at the Szechenyi or Gellért baths, once you're done.